Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
230046lightly pollutedexcellent91excellent
220048lightly pollutedexcellent91excellent
210047lightly pollutedexcellent81excellent
200038lightly pollutedexcellent61excellent
190029goodexcellent51excellent
180022goodexcellent41excellent
170018goodexcellent31excellent
160016goodexcellent31excellent
150019goodexcellent41excellent
140019goodexcellent41excellent
130019goodexcellent51excellent
120025goodexcellent51excellent
110027goodexcellent51excellent
100028goodexcellent71excellent
090034goodexcellent71excellent
080048lightly pollutedexcellent101excellent
070059lightly pollutedexcellent101excellent
060058lightly pollutedexcellent101excellent
050062moderately pollutedexcellent91excellent
040056lightly pollutedexcellent81excellent
030059lightly pollutedexcellent91excellent
020069moderately pollutedexcellent91excellent
010071moderately pollutedexcellent81excellent
000069moderately pollutedexcellent81excellent